scope:

This specification covers the general requirements for established reliability (ER), general purpose, ceramic multilayer high voltage capacitors for use in applications where appreciable variations in capacitance with respect to temperature, voltage, frequency, and life can be tolerated (BR and BZ characteristics) (see 6.1), or in critical frequency determining applications, timing circuits, and other applications where absolute stability is required (BP characteristic). Capacitors covered by this specification have failure rate levels (FRL) ranging from 1.0 to 0.001 percent per 1,000 hours. These FRL are established at a 60 percent confidence level and maintained at a 10 percent producer's risk and are based on life tests performed at maximum rated voltage at maximum rated temperature.

Capacitors covered by this specification should be classified by the style, as specified (see 3.1).

Capacitors specified herein (see 3.1) should be identified by a PIN which should consist of the basic number of the performance specification and a coded number. The coded number should provide information concerning the characteristic, specification sheet number, capacitance, capacitance tolerance, and FRL. The PIN should be in the following form with the coded number derived as indicated:

The characteristic refers to the voltage-temperature limits of the capacitor. The first letter (B) (not shown) identifies the rated temperature range of −55°C to +125°C. The second letter indicates the voltage temperature limits as shown in table I. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: US Army Communication-Electronics, ATTN: AMSEL-LC-LEO-E-EP, Fort Monmouth, NJ 07703-5023, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of the document, or by letter. TABLE I. Characteristic.

Capacitance change with reference to +25°C Symbol ---------------------------------------------------- Steps A through Rated Steps E through D of table IX voltage G of table IX -------------------------------------------------------------- P 0 ± 30 PPM 100 percent 0 ± 30 PPM R ± 15 percent 100 percent +15, −40 percent Z ± 15 percent 60 percent +15, −45 percent

The nominal capacitance value, expressed in picofarads (pF) is identified by a three digit number; the first two digits represent significant figures and the last digit specifies the number of zeros to follow.

The capacitance tolerance is identified by a single letter in accordance with table II. TABLE II. Capacitance tolerance.

Symbol Capacitance tolerance ------------------------------ J ± 5 percent K ± 10 percent M ± 10 percent

The FRL should be as specified in table III. TABLE III. FRL (established at a 60 percent confidence level).

Symbol FRL (percent per 1,000 hours) -------------------------------------------- M 1.0 P 0.1 R 0.01 S 0.001

This appendix details the procedure for submission of samples, with related data, for qualification inspection of capacitors covered by this specification. This appendix is a mandatory part of the specification. The information contained herein is intended for compliance. The procedure for extending qualification of the required sample to other capacitors covered by this specification is also outlined herein.

intended Use: